chatMessage resource type
Namespace: microsoft.graph
Represents an individual chat message within a channel or chat. The message can be a root message or part of a thread that is defined by the replyToId property in the message.
Note: This resource supports subscribing to changes (create, update, and delete) using change notifications. This allows callers to subscribe and get changes in real time. For details, see Get notifications for messages.
Methods
| Method | Return Type | Description |
|---|---|---|
| Channel messages | ||
| List messages in channel | chatMessage collection | List of all root messages in a channel. |
| Create subscription for new channel messages | subscription | Listen for new, edited, and deleted messages, and reactions to them. |
| Get message in channel | chatMessage | Get a single root message in a channel. |
| Send message in channel | chatMessage | Create a new root message in a channel. |
| Update message in channel | None | Update the policyViolation property of a chat message. |
| Delete message in channel | None | Delete the message in a channel. |
| Undo the deletion of a message in channel | None | Undelete the message in a channel. |
| Set reaction to a message in channel | None | Set reaction to a message in a channel. |
| Unset reaction to a message in channel | None | Unset reaction to a message in a channel. |
| Channel message replies | ||
| List replies to message | chatMessage collection | List of all replies to a chat message in channel. |
| Get reply message in channel | chatMessage | Get a single reply message in a channel. |
| Reply to a message in channel | chatMessage | Reply to an existing chat message in a channel. |
| Update reply message | chatMessage | Update the policyViolation property of a chat message. |
| Delete reply message in channel | chatMessage | Delete the single reply message in a channel. |
| Undo deletion of a reply message in channel | chatMessage | Undelete the single reply message in a channel. |
| Set reaction to a message in channel | None | Set reaction to a message in a channel. |
| Unset reaction to a message in channel | None | Unset reaction to a message in a channel. |
| Chat messages | ||
| List messages in chat | chatMessage | List chat messages in a chat. |
| Get message in chat | chatMessage | Get a single chat message in a chat. |
| Get messages across all chats for user | chat collection | Get messages from all chats that a user is a participant in, that includes 1:1 chats, group chats, and meeting chats. |
| Get delta chat messages for user | chatMessage collection | Get the list of messages from all chats in which a user is a participant, including one-on-one chats, group chats, and meeting chats. |
| Get all channel messages | channel collection | Get all messages from all channels that a user is a participant in. |
| Create subscription for new chat messages | subscription | Listen for new, edited, and deleted chat messages, and reactions to them. |
| Send message in chat | chatMessage | Send a chat message in an existing 1:1 or group chat conversation. |
| Update message in chat | chatMessage | Update the policyViolation property of a chat message. |
| Delete message in chat | chatMessage | Delete the message of a chat. |
| Undo the deletion of a message in chat | chatMessage | Undelete the message in a chat. |
| Set reaction to a message in channel | None | Set reaction to a message in a channel. |
| Unset reaction to a message in channel | None | Unset reaction to a message in a channel. |
| Hosted content | ||
| List all hosted content | chatMessageHostedContent collection | Get all hosted contents associated with a message. |
| Get hosted content | chatMessageHostedContent | Get hosted content (and its bytes) for a message. |
Properties
| Property | Type | Description |
|---|---|---|
| attachments | chatMessageAttachment collection | References to attached objects like files, tabs, meetings etc. |
| body | itemBody | Plaintext/HTML representation of the content of the chat message. Representation is specified by the contentType inside the body. The content is always in HTML if the chat message contains a chatMessageMention. |
| chatId | string | If the message was sent in a chat, represents the identity of the chat. |
| channelIdentity | channelIdentity | If the message was sent in a channel, represents identity of the channel. |
| createdDateTime | dateTimeOffset | Timestamp of when the chat message was created. |
| deletedDateTime | dateTimeOffset | Read only. Timestamp at which the chat message was deleted, or null if not deleted. |
| etag | string | Read-only. Version number of the chat message. |
| eventDetail | eventMessageDetail | Read-only. If present, represents details of an event that happened in a chat, a channel, or a team, for example, adding new members. For event messages, the messageType property will be set to systemEventMessage. |
| from | chatMessageFromIdentitySet | Details of the sender of the chat message. Can only be set during migration. |
| id | String | Read-only. Unique ID of the message. IDs are unique within a chat/channel/reply-to-message, but might be duplicated in other chats/channels/reply-to-messages. |
| importance | string | The importance of the chat message. The possible values are: normal, high, urgent. |
| lastModifiedDateTime | dateTimeOffset | Read only. Timestamp when the chat message is created (initial setting) or modified, including when a reaction is added or removed. |
| lastEditedDateTime | dateTimeOffset | Read only. Timestamp when edits to the chat message were made. Triggers an "Edited" flag in the Teams UI. If no edits are made the value is null. |
| locale | string | Locale of the chat message set by the client. Always set to en-us. |
| mentions | chatMessageMention collection | List of entities mentioned in the chat message. Supported entities are: user, bot, team, and channel. |
| messageHistory | chatMessageHistoryItem collection | List of activity history of a message item, including modification time and actions, such as reactionAdded, reactionRemoved, or reaction changes, on the message. |
| messageType | chatMessageType | The type of chat message. The possible values are: message, chatEvent, typing, unknownFutureValue, systemEventMessage. Note that you must use the Prefer: include-unknown-enum-members request header to get the following value in this evolvable enum: systemEventMessage. |
| policyViolation | chatMessagePolicyViolation | Defines the properties of a policy violation set by a data loss prevention (DLP) application. |
| reactions | chatMessageReaction collection | Reactions for this chat message (for example, Like). |
| replyToId | string | Read-only. ID of the parent chat message or root chat message of the thread. (Only applies to chat messages in channels, not chats.) |
| subject | string | The subject of the chat message, in plaintext. |
| summary | string | Summary text of the chat message that could be used for push notifications and summary views or fall back views. Only applies to channel chat messages, not chat messages in a chat. |
| webUrl | string | Read-only. Link to the message in Microsoft Teams. |
Relationships
| Relationship | Type | Description |
|---|---|---|
| hostedContents | chatMessageHostedContent collection | Content in a message hosted by Microsoft Teams - for example, images or code snippets. |
| replies | chatMessage collection | Replies for a specified message. Supports $expand for channel messages. |
JSON representation
The following JSON representation shows the resource type.
{
"attachments": [{"@odata.type": "microsoft.graph.chatMessageAttachment"}],
"body": {"@odata.type": "microsoft.graph.itemBody"},
"channelIdentity": {"@odata.type": "microsoft.graph.channelIdentity"},
"chatId": "String",
"createdDateTime": "String (timestamp)",
"deletedDateTime": "String (timestamp)",
"etag": "String",
"eventDetail": {"@odata.type": "microsoft.graph.eventMessageDetail"},
"from": {"@odata.type": "microsoft.graph.chatMessageFromIdentitySet"},
"id": "String (identifier)",
"importance": "String",
"lastEditedDateTime": "String (timestamp)",
"lastModifiedDateTime": "String (timestamp)",
"locale": "String",
"mentions": [{"@odata.type": "microsoft.graph.chatMessageMention"}],
"messageHistory": [{"@odata.type": "microsoft.graph.chatMessageHistoryItem"}],
"messageType": "String",
"policyViolation": {"@odata.type": "microsoft.graph.chatMessagePolicyViolation"},
"reactions": [{"@odata.type": "microsoft.graph.chatMessageReaction"}],
"replyToId": "String (identifier)",
"subject": "String",
"summary": "String",
"webUrl": "String"
}